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Displaying 17251 - 17275 of 73881

Millimeter-Wave Near-Field Measurements Using Coordinated Robotics

October 29, 2015
Author(s)
Joshua A. Gordon, David R. Novotny, Michael H. Francis, Ronald C. Wittmann, Alexandra Curtin, Miranda L. Butler, Jeffrey R. Guerrieri
The National Institute of Standards and Tech- nology (NIST) recently developed a new robotic scan- ning system for performing near-field measurements at millimeter-wave frequencies above 100 GHz, the CROMMA (Configurable Robotic Millimeter-Wave Antenna)

The NIST IAD Data Science Evaluation Series: Part of the NIST Information Access Division Data Science Research Program

October 29, 2015
Author(s)
Bonnie J. Dorr, Craig Greenberg, Peter Fontana, Mark A. Przybocki, Marion Le Bras, Cathryn A. Ploehn, Oleg Aulov, Wo L. Chang
The Information Access Division (IAD) of the National Institute of Standards and Technology (NIST) launched a new Data Science Research Program (DSRP) in the fall of 2015. This research program focuses on evaluation-driven research and will establish a new

A "Smart Component" Data Model in PLM

October 28, 2015
Author(s)
Yunpeng Li, Utpal Roy, Seungjun Shin, Yung-Tsun Lee
Today's physical products are becoming smarter not only because of their increasingly complex functionalities, but also for their superior capabilities of adaptation to dynamic working environment based on embedded software and real-time information

A Profile for U. S. Federal Cryptographic Key Management Systems

October 28, 2015
Author(s)
Elaine B. Barker, Miles Smid, Dennis Branstad
This Profile for U. S. Federal Cryptographic Key Management Systems (FCKMSs) contains requirements for their design, implementation, procurement, installation, configuration, management, operation, and use by U. S. Federal organizations. The Profile is

Guide to Application Whitelisting

October 28, 2015
Author(s)
Adam Sedgewick, Murugiah Souppaya, Karen Scarfone
An application whitelist is a list of applications and application components that are authorized for use in an organization. Application whitelisting technologies use whitelists to control which applications are permitted to execute on a host. This helps

Order-Disorder and Phase Separation

October 28, 2015
Author(s)
Benjamin P. Burton
Order-disorder and phase separation in condensed solutions of two or more components are similar processes that are typically driven by energetics of opposite sign. The components may be: different atomic species in alloys or solid solutions; atoms and

Double-integrating-sphere system at the National Institute of Standards and Technology in support of measurement standards for the determination of optical properties of tissue-mimicking phantoms

October 27, 2015
Author(s)
Paul Lemaillet, Jeeseong C. Hwang, David W. Allen
There is a need for a common reference point that will allow for the comparison of the optical properties of tissue mimicking phantoms. This paper provides a brief review of the methods that have been used to measure tissue mimicking phantoms. The review

HOW OLD IS IT? - 241PU/AMNUCLEAR FORENSIC CHRONOLOGY REFERENCE MATERIALS

October 27, 2015
Author(s)
Ryan P. Fitzgerald, Kenneth G. Inn
One material attribute for nuclear forensics is material age. 241Pu is almost always present in uranium- and plutonium-based nuclear weapons, which pose the greatest threat to our security. The in-growth of 241Am due to the decay of 241Pu provides an

New Results on Packing Degree Sequences and the 2-Color Discrete Tomography Problem

October 27, 2015
Author(s)
James Shook, Michael Ferrara, Jennifer Diemunsch, Sogol Jahanbekam
A sequence $\pi=(d_1,\ldots,d_n)$ is graphic if there is a simple graph $G$ with vertex set $\{v_1,\ldots,v_n\}$ such that the degree of $v_i$ is the $i$th entry of $\pi$. We say that graphic sequences $\pi_1=(d_1^{(1)},\ldots,d_n^{(1)})$ and $\pi_2=(d_1^{

Policy Machine: Features, Architecture, and Specification

October 27, 2015
Author(s)
David F. Ferraiolo, Serban I. Gavrila, Wayne Jansen
The ability to control access to sensitive data in accordance with policy is perhaps the most fundamental security requirement. Despite over four decades of security research, the limited ability for existing access control mechanisms to enforce a

The NIST Plan for Providing Public Access to Results of Federally Funded Research

October 27, 2015
Author(s)
Katherine E. Sharpless, Regina L. Avila, Sally S. Bruce, Wo L. Chang, Robert M. Dimeo, Virginia Covahey, Alan K. Dohne, Heather M. Evans, Aaron P. Fein, Donna J. Kimball, Andrea M. Medina-Smith, Alan E. Munter, James K. Olthoff, Dianne L. Poster, Kathleen M. Roberts, Susannah B. Schiller, John H. Scott, Barbara P. Silcox, James A. St Pierre, Mark D. Stiles
Documentation of the evolution of NIST's plan for providing public access to results of federally funded research is provided, including the plan itself, responses to comments made by NIST staff, and public comments received in response to a request for

The Number of Boolean Functions with Multiplicative Complexity 2

October 27, 2015
Author(s)
Magnus G. Find, Daniel C. Smith-Tone, Meltem Sonmez Turan
Multiplicative complexity is a complexity measure, which is defined as the minimum number of AND gates required to implement a given primitive by a circuit over the basis (AND, XOR, NOT), with an unlimited number of NOT and XOR gates. Implementations of

Enhanced Magnetic Trap Loading for Atomic Strontium

October 26, 2015
Author(s)
Gretchen K. Campbell, Daniel Barker, Benjamin Reschovsky, Neal Pisenti
We report on a technique to improve the continuous loading of atomic strontium into a magnetic trap from a Magneto-Optical Trap (MOT). This is achieved by adding a depumping laser tuned to the 3 P1 → 3 S 1 (688-nm) transition. The depumping laser increases
Displaying 17251 - 17275 of 73881
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